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Notices:

As of Dec. 15, the OTTAWA MACDONALD-CARTIER INT’L A and HAMILTON A airport stations will switch over to new partner maintained and operated stations. Due to a new format, hourly data from these stations will not be available on our website. We ask for your patience while we are working to upgrade our system to display these data. If you are interested in daily data for these stations, they can now be found under their new partnered station names, OTTAWA INT’L and HAMILTON. If you have any questions or concerns, please contact us at climate.services@ec.gc.ca.

We are currently experiencing some problems with the French version of the Climate Summaries on our Products & Services page. We are working to rectify the problem and ask for your patience during this time of technical difficulty. In the meantime, please refer to the data available from the English Climate Summaries page.

The Notice Inventory contains a record of all past and current Notices.

Today's Weather Trivia

8 February

2005: Southern Ontario and Québec had endured an unprecedented 8-day smog advisory. An "inversion layer" kept pollutants trapped at street level. People with respiratory or heart disease were most at risk, and pollution levels were highest in the morning as children went to school. The air was still, with no precipitation to cleanse it. It was like putting southern Ontario into the SkyDome.

Excerpt from 'The Canadian Weather Trivia Calendar' by David Phillips. © Environment Canada

Welcome

National Climate Data and Information Archive

Historical Weather and Climate Data Map of Canada Locate climate data for many Canadian cities using our interactive Map of Canada.

Access the same hourly, daily or monthly data and Almanac averages and extremes by typing in the station name or location into our
Customized Search tool.

Canadian Climate Normals
Find climate averages or extremes for nearly 1500 locations using the Canadian Climate Normals application.

Historical Radar
Historical Radar

Check out past storm events with the Historical Radar viewer.


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Date Modified: 2012-01-11

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